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Finding the Fourth Proportional to 378,806,502.60, 568,209,753.90 and 249,560,051.40

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Solution

The fourth proportional to 378,806,502.60, 568,209,753.90 and 249,560,051.40 is: 374,340,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,806,502.60 : 568,209,753.90 = 249,560,051.40 : x
  2. Step 2: Convert to fraction form
    378,806,502.60/568,209,753.90 = 249,560,051.40/x
  3. Step 3: Cross multiply
    378,806,502.60x = 568,209,753.90 × 249,560,051.40
  4. Step 4: Simplify right side
    378,806,502.60x = 141,802,455,389,265,344
  5. Step 5: Solve for x
    x = 141,802,455,389,265,344/378,806,502.60
  6. Step 6: Final answer
    x = 374,340,077.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.